Micro-oil air compressor can not achieve the effect of oil-free air compressor there are significant differences between the two in terms of compressed air quality, working principle, applicable scenarios, manufacturing costs and maintenance methods. Specific analysis is as follows:
compressed air quality
- oil-free air compressor: The discharged gas contains almost no oil and has high purity, which can meet the high standards of compressed air quality in the pharmaceutical industry. The output compressed air oil content is usually ≤ 0.001ppm, which can stably reach ISO 8573-1 Class 0 oil-free standard (oil content "not detected" level).
- Micro-oil air compressor: Although the oil content is low, the exhaust gas still contains trace amounts of lubricating oil. The output of the compressed air oil content is usually between 3-5ppm, some high-end models can be reduced to less than 1ppm, but still can not achieve the purity of oil-free air compressor.
Working principle
- oil-free air compressor: Lubricating oil is not used at all during operation, but other media (such as water, resin materials, etc.) or specially designed self-lubricating parts are used to reduce friction and wear. Its working principle may include cylinder compression, cooling system, gas separation and other steps to ensure that no oil mist is generated during the compression process.
- Micro-oil air compressor: A small amount of tiny lubricating oil vapor is injected during the air compression process, and these oil vapors are mixed with air for compression. After that, the oil mist separator or filter is generally used to separate the oil mist to reduce the oil content in the compressed air.
Applicable Scenarios
- oil-free air compressor widely used in areas with high air quality requirements, such as gold plating, copper plating, medical, laboratory, electronics, chemical and pharmaceutical industries. These industries require pure, oil-free compressed air to ensure product quality and production safety.
- Micro-oil air compressor: It is more suitable for industries with moderate requirements for air purity and relatively low cost, such as automobile manufacturing, electronic manufacturing, food processing (non-direct contact with food), etc. In these occasions, although there are certain requirements for the oil content of the compressed air, compared with the oil-free air compressor, the micro-oil air compressor may have more advantages in cost and efficiency.
Manufacturing costs and maintenance methods
- oil-free air compressor: Due to the need to use special materials and designs to achieve oil-free lubrication, its manufacturing cost is relatively high. However, since there is no need to change the lubricating oil and filter element regularly, the maintenance cost is relatively low.
- Micro-oil air compressor: The manufacturing cost is relatively low, but the lubricating oil and filter element need to be replaced regularly to ensure the normal operation of the equipment. In addition, due to the presence of trace amounts of lubricating oil, additional oil and gas separation and filtration equipment may be required.
